llodi

Q: OSX 10.11.4 External usb drive isn't mounted

Hi, Everyone

 

After update on 10.11.4 my Mac mini 2012 doesn't mount external usb drive after rebooting or turning on.

If I unplug and plug it, it mounts.

Everything was fine until I've updated on new version ((

 

Do you have any ideas about reasons of this bug?

Mac mini, OS X El Capitan (10.11.4), 2012 with core i7

Posted on Mar 25, 2016 5:57 AM

Close

Q: OSX 10.11.4 External usb drive isn't mounted

  • All replies
  • Helpful answers

  • by JimmyCMPIT,

    JimmyCMPIT JimmyCMPIT Mar 25, 2016 6:06 AM in response to llodi
    Level 5 (7,481 points)
    Mac OS X
    Mar 25, 2016 6:06 AM in response to llodi

    is it in hub? remove it from the hub and connect directly to the computert

    did you recently add another usb device? if so remove it

    remove all USB devices except the drive (and mouse and keyboard if they are USB) and reboot

    does the problem persist?

    if the drive gets power from the computer try reseting the SMC

    https://support.apple.com/en-us/HT201295

    and continue with resetting the PRAM (it won't fix power issues but it won't hurt) in the same article.

     

     

     

    Does the drive use it's own utilities that came with it?

    if so remove them, these utilities often conflict with Mac OS.

    you can also bypass 3rd party exnsions by booting into safe mode

    https://support.apple.com/en-us/HT201262

     

    do you run any Mac Anti Virus or 3rd party utility (e.g. Clean my Mac, Mac Keeper, etc.)

    if so remove them, these are know problem catalysts well documented in these forms as things to be avoided despite their claims.

  • by Cohen98,

    Cohen98 Cohen98 Mar 25, 2016 6:07 AM in response to llodi
    Level 1 (16 points)
    Notebooks
    Mar 25, 2016 6:07 AM in response to llodi

    What format is this USB Drive? Usually if it is formatted for use in windows, it might not work with Mac. Just a thought!

     

    - Cohen

  • by llodi,

    llodi llodi Mar 25, 2016 6:17 AM in response to JimmyCMPIT
    Level 1 (8 points)
    Mac OS X
    Mar 25, 2016 6:17 AM in response to JimmyCMPIT

    no hub, It's box with 1TB hdd, wich is pluged directly to one of usb port

    I keep itunes folder on this drive and some cloud folders.

     

    And I think it's power issue because after updating led indicator on box doesn't light after turning on. But when I replug it hdd is mounted

    Something wrong with kext or modules in update I suppose

     

    I have no any antiVirus apps

  • by llodi,

    llodi llodi Mar 25, 2016 6:19 AM in response to Cohen98
    Level 1 (8 points)
    Mac OS X
    Mar 25, 2016 6:19 AM in response to Cohen98

    Mac OS Extended

  • by llodi,

    llodi llodi Mar 26, 2016 12:08 AM in response to llodi
    Level 1 (8 points)
    Mac OS X
    Mar 26, 2016 12:08 AM in response to llodi

    some details to my post:

     

    when I turn on my mac mini led of external usb drive box lights up, but in the middle of booting it lights off.

    After that I log on my mac and External hdd is not mounted 

    But If I replug it before I log on or after hdd is mounted

  • by adamcovfan,

    adamcovfan adamcovfan Mar 26, 2016 3:05 AM in response to llodi
    Level 1 (4 points)
    Mar 26, 2016 3:05 AM in response to llodi

    i have same problem on my mac mini 2012 with external usb drives . won't mount after update . about my mac system report shows them connected to usb port but won't most or show in disc utility so i have to plug them into monitor hub for them to mount ?.

  • by tgasc,

    tgasc tgasc Mar 26, 2016 11:23 AM in response to llodi
    Level 1 (4 points)
    Mar 26, 2016 11:23 AM in response to llodi

    Same exact problem, I posted mine a few days ago, no solution, disappointed.

     

    I reversed back to 10.11.3, problem gone. Sad!

     

    My original post can be found here: External SSD issue after 10.11.4 update

  • by Ravenholm,

    Ravenholm Ravenholm Apr 13, 2016 7:00 AM in response to llodi
    Level 1 (4 points)
    Apr 13, 2016 7:00 AM in response to llodi

    Upgrading to 10.11.5 beta seem to solve this problem for me. Not sure what other bugs are there so far:)

  • by llodi,

    llodi llodi Apr 13, 2016 9:14 AM in response to Ravenholm
    Level 1 (8 points)
    Mac OS X
    Apr 13, 2016 9:14 AM in response to Ravenholm

    Thanx ! I will wait to update

  • by tgasc,

    tgasc tgasc May 18, 2016 12:21 PM in response to llodi
    Level 1 (4 points)
    May 18, 2016 12:21 PM in response to llodi

    I just updated to 10.11.5, still can't see the SSD every time I boot my system (including restart).

  • by llodi,

    llodi llodi May 20, 2016 9:06 PM in response to tgasc
    Level 1 (8 points)
    Mac OS X
    May 20, 2016 9:06 PM in response to tgasc

    me too! release update didn't help

  • by AHA-Berlin,

    AHA-Berlin AHA-Berlin May 25, 2016 7:36 AM in response to llodi
    Level 1 (4 points)
    May 25, 2016 7:36 AM in response to llodi

    Same issue, since using El Capitain (still 10.11.39). USB drive sometimes mounts, sometimes not upon booting. Another drive mounts more often, but also not always.

    The drives are perfectly mounted when the cable is disconnected and connected again.

    Is the time-out of the system to short to activate the drive? Or to early?

    Is there any workaround, e.g. a script command thats initiates mounting?

    "diskutil mount " or "mount" do not work, as the drive is not available in the disc utility.

  • by llodi,

    llodi llodi May 25, 2016 8:44 AM in response to AHA-Berlin
    Level 1 (8 points)
    Mac OS X
    May 25, 2016 8:44 AM in response to AHA-Berlin

    I don't have any workaround(((

    I suppose bug is usb power, because at the beginning of loading (about several secs) led of my usb external drive lights up, further in the middle of booting it lights off and hdd isn't mounted